| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a feeling of key touch resembling the case of an acoustic piano. SOLUTION: A slit 24 for keeping a hammer support shaft in such a state as movably inserted is formed on a hammer arm 5 for applying an action load to the key 2 of a keyboard chassis 1, and this keyboard chassis 1 is provided with an inclined member 21 where the projection 22 of the hammer arm 5 moves in a contact state at the time of key striking. At an outgoing process, therefore, the projection 22 of the hammer arm 5 moves in such a state as in contact with the inclined step part 23 of the inclined member 21 and consequently, the hammer arm 5 moves to a position forward of the key 2. Thus, the projection 22 gets over the inclined member 21 and a through-feeling of touch can be given to the key 2. On the other hand, the projection 22 of the hammer arm 5 departs from the inclined member 21 at a return process in an untouched state. According to this construction, a click feeling is not given to the key 2, thereby providing a feeling of key touch resembling the case of an acoustic piano.</p> |
